CVE-2025-67445

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
http://totolink.com	Product
https://github.com/DaRkSpOoOk/CVE-2025-67445	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:*

cpe:2.3:h:totolink:x5000r:-:*:*:*:*:*:*:*

History

25 Feb 2026, 17:54

Type	Values Removed	Values Added
CPE		cpe:2.3:h:totolink:x5000r:-:::::::* cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:::::::*
First Time		Totolink x5000r Totolink x5000r Firmware Totolink
References	~~() http://totolink.com -~~	() http://totolink.com - Product
References	~~() https://github.com/DaRkSpOoOk/CVE-2025-67445 -~~	() https://github.com/DaRkSpOoOk/CVE-2025-67445 - Exploit, Third Party Advisory

25 Feb 2026, 17:25

Type	Values Removed	Values Added
CWE		CWE-400
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

24 Feb 2026, 15:21

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-24 15:21

Updated : 2026-02-27 19:16

NVD link : CVE-2025-67445

Mitre link : CVE-2025-67445

CVE.ORG link : CVE-2025-67445

JSON object : View

Products Affected

totolink

x5000r_firmware
x5000r

CWE

CWE-400

Uncontrolled Resource Consumption

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